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SQL statements begin with a verb and can include clauses or names. For example:
SELECT PartNumber FROM PurchDB.Parts
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| | | owner | |
| | | name | |
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statement | | table |
verb | | name |
| | |
column +----------------+
name |
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FROM
clause
Statements always contain a verb, one or more words that describe the
action of the statement. A statement can also contain one or more
clauses. A clause is a group of names and keywords describing what the
verb should operate on. A verb can operate on a named
object, such as a table or a column. Some statements can contain
expressions or search conditions. Expressions specify a value.
Search conditions screen data against specific criteria:
SELECT * FROM PurchDB.Parts WHERE SalesPrice > 200.00
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all | | expression |
columns | | |
| +-----------------+
| | |
| search condition |
| |
+-----------------------+
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WHERE
clause
The syntax of SQL is fully described in chapters 7-12 of this manual.
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